/*
 * Window.cpp
 *
 * Copyright (c) 2009-2011 [BRN] aka. SWW13.
 *
 * This file is part of [BRN]Lib.
 *
 * [BRN]Lib is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * [BRN]Lib is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with [BRN]Lib.  If not, see <http ://www.gnu.org/licenses/>.
 */

#include "Window.h"

namespace BRNlib
{
	namespace Core
	{
		HWND Window::WindowHandle = NULL;

		HWND Window::GetWindow()
		{
			if(WindowHandle != NULL)
				return WindowHandle;

			DWORD PorcId = GetCurrentProcessId();
			HWND wnd = GetTopWindow(0);
			std::vector<HWND> Windows;
			
			//Alle Fenster vom Process finden
			while(wnd)
			{
				DWORD pid;
				DWORD dwTheardId = GetWindowThreadProcessId(wnd, &pid);

				if (pid == PorcId)
					Windows.push_back(wnd);
				
				wnd = ::GetNextWindow(wnd, GW_HWNDNEXT);
			}

			//Mehr als ein Fenster -> Suche nach sichtbaren Starten
			if(Windows.size() > 0)
			{
				WindowHandle = Windows[0];

				if(Windows.size() > 1)
					EnumDesktopWindows(GetThreadDesktop(GetCurrentThreadId()), EnumWindowsProc, NULL);
			}

			return WindowHandle;
		}

		BOOL CALLBACK Window::EnumWindowsProc(HWND hWnd, LPARAM lParam)
		{
			DWORD PorcId = GetCurrentProcessId();
			DWORD pid;
			DWORD dwTheardId = GetWindowThreadProcessId(hWnd, &pid);

			if(IsWindowVisible(hWnd) && pid == PorcId)
				WindowHandle = hWnd;

			return TRUE;
		}
	}
}